Sudden infant death syndrome (SIDS) is also known as crib or cot death. The term, SIDS, describes the sudden, unexplained death of an infant less than one year old.
SIDS is a subcategory of Sudden Unexpected Infant Death (SUID). SUID is a newer term that you may not be familiar with. The term describes a sudden, unexpected death of an infant (age birth to 1 year). The cause of death is undetermined until a thorough investigation of events is completed. The Centers for Disease Control reports that in 2022, there were approximately 3,700 unexpected infant deaths in the United States.